I run in a similar problem, but it is fixed with 2.6.20-4. The hard disc was not found correctly. In the bootlog I saw the message:
PCI: Unable to reserve I/O region #1:[EMAIL PROTECTED] for device 0000:00:1f.2 The problem was still in 2.6.20-rc3: http://lkml.org/lkml/2007/1/1/20 and http://lkml.org/lkml/2006/12/3/99 -- linux-image-2.6.20-2: unable to boot Feisty https://launchpad.net/bugs/76640 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs